• Overview
  • Technical Specifications
  • Performance
  • Accessories

Basic Rackmount RAID Storage

Available in configurations from 0 to 8TB(1), Sonnet’s Fusion R400P is an economical and easy-to-deploy solution for reliable, flexible, high-performance storage in studio, control room, and mobile installations. Based on the award-winning Fusion R400Q quad interface storage system, Fusion R400P features a fast eSATA interface and an integrated port multiplier(2) to manage the data flow from all four drives.

One Cable, All the Data

Fusion R400P enclosures employ a high performance SATA II port multiplier to manage the enclosed drives—just a single locking data cable connects the enclosure to a SATA host controller card. This efficient interface simplifies setup and cuts cable clutter while offering a significant improvement in data throughput speeds when compared with FireWire® 800, FireWire 400 or USB interfaces.

Safe and Secure

Fusion storage systems employ Enterprise/RAID Edition hard drives or select, Sonnet certified desktop drives(2) that have been selected for their superior performance, error handling, and reliability characteristics, especially when used in RAID groups. These drives are subjected to hours of additional, stringent testing to check for soft errors, vibration, and other reliability predictors. Just the sturdiest drives pass these tests and are prepared with special RAID-optimized firmware to become the building blocks of a super-reliable Fusion storage system.

Server Room

Fusion R400P storage systems are simple to set up, easy to configure, and reliable

Maximum Performance, Maximum Convenience

Connected to a Sonnet Tempo™ SATA E4P PCIe or X4P PCI-X host controller installed in a Mac® or Windows® computer, a Fusion R400P’s drives are accessed through its port multiplier(2). With its drives configured as a RAID 0 striped set, a single Fusion R400P system can achieve data throughput of up to 220MB/sec(2), fast enough to support multiple streams of DV, HDV, DVCPRO, ProRes 422, or a single stream of uncompressed 10-bit NTSC video. Do you want even more performance? Up to four Fusion R400P systems can be ganged on a single Tempo SATA E4P or X4P controller for enhanced data throughput and double, triple, or even quadruple the available streams (as well as increasing the number of supported video formats). Performance, capacity, and RAID reliability are dependent on drive choice(3).

Key Features

eSATA interface through an integrated port multiplier

Up to 220 MB/sec transfer rates

Universal 180W, 110–240V, 50–60Hz power supply

0TB, 4TB, or 8TB configurations

Drive Activity, drive presence, and power LED indicators

Quiet fans

Secure drive trays

Sonnet locking eSATA cable included

Compatible with Sonnet Tempo SATA E4P, Tempo SATA X4P, Tempo SATA ExpressCard/34 and Tempo SATA Pro

ExpressCard/34 host controller cards

RoHS compliant


Versatile Performer

The 1U rackmount Fusion R400P system enclosure, at just 1.75" tall, is simple to install in most server racks. Drive presence and drive activity LED indicators are present on the front panel, so drive status can be determined at a glance. Fusion R400P sets up quickly and supports simple software-configured storage according to your needs: RAID 0(4) storage for speed, RAID 1 for redundancy, and JBOD for audio editing archiving. Fusion R400P is ideal for use in mixed environments—various operating systems, editing applications and output demands requiring the flexibility and interoperability that this storage system provides. Fusion storage systems support Mac OS® X, Windows Vista, Windows XP, and Linux. They are compatible with capture cards from AJA, Blackmagic Design, Matrox, and Bluefish444, and work with all mainstream video editing applications including Apple® Final Cut Pro®, and Adobe® Premiere® Pro CS4.

Expandability to Start

Looking for a storage system to expand with your needs? Choose the Fusion R400P 0TB—you can install a single drive into one its swappable drive trays to start and add drives as you go, or load the system with the highest capacity drives available.



Part No.  
FUS-R4P Discontinued
Warranty 5-year
External Connectors One locking eSATA
Drives Supported Up-to-date compatible hard drives listed on our Certified Hard Drive Compatibility Chart
Data Transfer Speed Up to 220 MB/s, depending on interface used and configuration
Supported Drive Configurations JBOD; software-based RAID 0, 1, and 10
Supported Video Formats Uncompressed 10-bit NTSC HD, DV, HDV, DVCPRO, and uncompressed SD
Power Supplies Universal 180W, 100–240V AC, 50–60Hz
Operating Temperature +32º F to +95º F (0º C to +35º C)
Dimensions WxDxH: 17.0 x 16.5 x 1.75 in (43.8 x 41.9 x 4.4 cm)
Weight 21.1 lbs (9.6 kg) with drives,
14.8 lbs (6.7 kg) without
Noise Fusion R400P: 41 dBA
(Ambient Office: 40-50 dBA)
Package Contents
  • Rackmount disk enclosure
  • Four 3.5" drive modules or drive trays (with drive mounting hardware)
  • One locking eSATA data cable
  • Power cord
  • User’s Guide







Platform independent—Mac OS®, Windows, and Linux®

Capture Card Compatibility

AJA, Blackmagic Design, Matrox, and Bluefish444

Video Editing Application Compatibility

Apple Final Cut Pro, Adobe Premiere Pro

Technical Notes

  1. Although hard drive manufacturers and Mac OS X 10.6 define 1 gigabyte as 1,000,000,000 bytes, many other computer operating systems calculate a gigabyte by dividing the bytes by 1,073,741,824 (). This distinction may be a cause of confusion, as a hard disk with a manufacturer rating of 1000GB may have its capacity reported by the operating system as 915GB.
  2. Fusion R400P requires a SATA host controller that supports port multipliers, such as Sonnet's Tempo SATA E4P for computers with PCI Express slots, Tempo SATA X4P for computers with PCI-X slots, or Tempo SATA Pro ExpressCard/34 or Tempo SATA ExpressCard/34 for portable computers with an ExpressCard slot.
  3. Creating RAID volumes under Windows requires dynamic disk storage, a formatting option available with Windows Server 2003 SP1, Windows XP Professional (32- and 64-bit versions), or Windows Vista Enterprise or Ultimate (32- and 64-bit versions). In order to create RAID volumes larger than 2TB, you must do one of the following: Concatenate (link together in a virtual chain) the volumes, and then format them as NTFS. -OR- Use GPT formatting. Note that drives and volumes with GPT formatting are not visible to any version of Windows XP Professional, nor to the 32-bit version of Windows Server 2003 SP1.

Specifications subject to change without notice.

Mac OS LogoWindows Logo Linux Logo eSATA Logo roHS Logo

Fusion R400P Benchmarks

Fusion R400P connected to Tempo SATA E4P host controller installed in Quad 2.66 GHz Mac Pro w/3GB of RAM and an AJA Kona3 capture card. Drives were configured as a RAID 0 set.



(1 stream=3.6 MB/s)


(1 stream=7.2 MB/s)


DVCPRO HD 720p 59.94
(1 stream=14.4 MB/s)


DVCPRO HD 1080i 29.97
(1 stream=16 MB/s)


HDV 720p
(1 stream=2.4 MB/s)


HDV 1080i 29.97
(1 stream=3.1 MB/s)


ProRes 422 NTSC SD
(1 strm=5.25 MB/s)


ProRes 422 HQ NTSC SD
(1 stream=7.87 MB/s)


ProRes 422 720p 59.94
(1 stream=18.375 MB/s)


ProRes 422 HQ 720p 59.94
(1 stream=27.5 MB/s)


ProRes 422 1080i 29.97
(1 stream=18.375 MB/s)


ProRes 422 HQ 1080i 29.97
(1 stream=27.5 MB/s)


Uncompressed 8-bit NTSC
(1 stream=21.0 MB/s)


Uncompressed 10-bit NTSC
(1 stream=28.0 MB/s)


Uncompressed 8-bit 720 HD
(1 stream=55.2 MB/s)


Uncompressed 10-bit 720 HD
(1 stream=73.6 MB/s)


Uncompressed 8-bit 1080i HD
(1 stream=124.3 MB/s)


Uncompressed 10-bit 1080 HD
(1 stream=165.7 MB/s)


* Supports 1 stream of playback. Capture supported if disk array is less than 80% full and not extremely fragmented.


Product image Product Name Part No. Description
Fusion RAID Drive Module Fusion 500GB RAID Drive Module FUS-RM-0500GB Spare drive module for Fusion R400P
Fusion 750GB RAID Drive Module FUS-RM-0750GB Spare drive module for Fusion R400P
Fusion 1TB RAID Drive Module FUS-RM-1000GB Spare drive module for Fusion R400P
Fusion 1.5TB RAID Drive Module FUS-RM-1500GB Spare drive module for Fusion R400P
Fusion 2TB RAID Drive Module FUS-RM-2000GB Spare drive module for Fusion R400P
Fusion Rack Slide Set Fusion Rack Slide Set (17.5-21") FUS-RSS-P Rack Mount Sliding Rail Kit for Fusion R400P (17.5-21" rack)
Fusion Rack Slide Set (23-26.5") FUS-RSS-S Rack Mount Sliding Rail Kit for Fusion R400P (23-26.5" rack)
Fusion Rack Slide Set (27-30.5") FUS-RSS Rack Mount Sliding Rail Kit for Fusion R400P (27-30.5" rack)
Fusion Rack Slide Set (29-32.5") FUS-RSS-L Rack Mount Sliding Rail Kit for Fusion R400P (29-32.5" rack)